}
    }

    /**
     * Test implementation of CommonServerMessageBlockResponse
     */
    private static class TestResponse implements CommonServerMessageBlockResponse {
        private boolean async = false;
        private CommonServerMessageBlockResponse nextResponse;
        private boolean received = false;
        private int errorCode = 0;
        private long mid = 0;
        private Long expiration = null;

            assertEquals('a', stream.read());
            assertEquals(-1, stream.read()); // EOF
        }

        // File should be deleted after close
        // Note: FileUtil.deleteInBackground() is async, so we can't reliably test this
    }

    public void test_available() throws Exception {
        // Create a temporary file with test data
        File tempFile = File.createTempFile("test-", ".tmp");

        // Next command
        SMBUtil.writeInt4(0, buffer, bufferIndex + 20);
        // Message ID
        SMBUtil.writeInt8(1, buffer, bufferIndex + 24);
        // Reserved/Async ID
        SMBUtil.writeInt8(0, buffer, bufferIndex + 32);
        // Session ID
        SMBUtil.writeInt8(0, buffer, bufferIndex + 40);
        // Signature

```javascript
<!-- Old GSS/CSE Code -->
<script>
  (function() {
    var cx = 'YOUR-CSE-ID';
    var gcse = document.createElement('script');
    gcse.type = 'text/javascript';
    gcse.async = true;
    gcse.src = 'https://cse.google.com/cse.js?cx=' + cx;
    var s = document.getElementsByTagName('script')[0];
    s.parentNode.insertBefore(gcse, s);
  })();
</script>
<gcse:search></gcse:search>
```

        for (EventType type : EventType.values()) {
            eventCounters.put(type, new AtomicLong(0));
            eventTimings.put(type, new AtomicLong(0));
        }

        // Start async logging processor
        startAsyncProcessor();

        // Register shutdown hook
        Runtime.getRuntime().addShutdownHook(new Thread(this::shutdown));
    }

    private void startAsyncProcessor() {

                directoryPath, leaseKey, directory);
            
            activeWatchers.put(directoryPath, handle);
            
            // Start async change notification
            startAsyncNotification(handle);
            
        } catch (Exception e) {
            log.error("Failed to start directory watching for: " + directoryPath, e);
        }
    }

```java
suggester.suggest()
    .setQuery("sea")
    .execute()
    .done(response -> {
        // Handle successful response
        response.getItems().forEach(item -> 
            System.out.println("Async suggestion: " + item.getText()[0])
        );
    })
    .error(throwable -> {
        // Handle error
        System.err.println("Error: " + throwable.getMessage());
    });
```

## Advanced Usage

            ChangeNotificationHandle handle = new ChangeNotificationHandle(directoryPath, leaseKey, directory);

            activeWatchers.put(directoryPath, handle);

            // Start async change notification
            startAsyncNotification(handle);

        } catch (Exception e) {
            log.error("Failed to start directory watching for: " + directoryPath, e);
        }
    }

        this.contextHandle = contextHandle != null ? contextHandle.clone() : new byte[20];
        this.notifications = new ArrayList<>();
    }

    /**
     * Sets the context handle for the async notify request.
     *
     * @param contextHandle the context handle from registration
     */
    public void setContextHandle(byte[] contextHandle) {

            logger.debug("[scheduleParentGroupLookup] Scheduling async parent group lookup for user: {}, groupIds count: {}",
                    user.getName(), groupIds.size());
        }
        TimeoutManager.getInstance().addTimeoutTarget(() -> {
            if (logger.isDebugEnabled()) {
                logger.debug("[scheduleParentGroupLookup] Async task started for user: {}", user.getName());
            }